Leo
I walked in front of Reyna and Hazel. The sound of the storm outside was barely audible anymore. I glanced at my watch. 6:11 am. 50 minutes until Mr. Brunner comes back. Too long. The killer could strike again before he comes. I glanced nervously behind me as if the killer would pop out at any notice. Hazel was looking around, fear clear in her eyes, the flashlight shaking in her hand. Reyna was just glaring at nothing.
"If I were a murderer..." I murmured to myself, "Where would I hide the body?"
Probably in a classroom or a closet.
"Hazel, Reyna, which class is closest to the staircase that Calypso found the blood? And are there any janitor closets near it?" I asked.
"I think that there is a janitor closet a few rooms down." Hazel answered.
"The class closest to it is Mr. Blofis's class." Reyna told me.
"Then let's go there." I walked past a fire hydrant. I heard the clang of metal behind me and turned around, frowning. A flash of red streaked towards me and something cold and hard crashed against my head. A searing pain spread across my head and my knees buckled. I fell to the floor, my body hitting the cold tiles. My vision started darkening and I could feel warm and sticky blood matting my hair. Then everything went black.

Percy
Annabeth and Piper were searching in a class, Thalia and I in another.
"Nothing in here." I called.
"Nothing in here either." Annabeth answered. I sighed, running my hand through my hair. A scream echoed through the school, making all of us freeze, followed by a terrified voice screaming,
"HELP! HELP ME!"
"It's Hazel!" I immediately started running, knowing that the others were right behind me. I turned a corner, skidding to a stop as I saw Reyna, Hazel and Leo. Leo was lying face down, unconscious on the floor, blood slowly sliding down his hair. Reyna was kneeling next to Hazel, who was lying on the ground. Reyna's hands were wrapped around her neck, a vicious snarl plastered on her face. Hazel was weakly scratching at her, but she was too weak to break free.
"Reyna?" Annabeth whispered, her mouth gaping open. Reyna turned, only realising we were there now. Her eyes widened and she let go of Hazel. Hazel quickly pushed her away and scrambled to her feet, running towards us. Reyna glared at her as she got to her feet. On the other side of the hall, Calypso, Frank, Nico and Will came running into view.
"I knew it. You're the killer!" Piper spat.
"What's going on?" Nico demanded.
"Leo!" Calypso ran over to him and fell to her knees next to him.
"What happened?"
"S-She hit Leo over the head with the fire hydrant and then attacked me." Hazel whimpered, hiding behind me. Will knelt next to Leo and Calypso and took off his jacket, bundling it up.
"Press this against his head. Do not stop putting pressure on the wound or it won't stop bleeding." He ordered. She nodded and did what he said.
"Reyna, you're out numbered. Don't try to do anything stupid." I told her. She glared at me. "Frank, run to the gym and get some rope." I didn't move my eyes from her. I heard his footsteps fade away. A few minutes later he was back, with rope in his hands. He approached Reyna and she held up her hands in surrender. Frank tied her hands together.
"We need to clean his wound to see how bad it is." Will said.
"Someone get some water. Now." I ordered. I turned to Reyna.
"And as for you..."

Well there you have it. Who expected that? Probably everyone. Woops. I made it too obvious, didn't I? Anyway, on with the next chapter.
~Ciao for now.